Hack-saw frame



- A.GRE|G.

cK SAW FRAME. ED JAN. 18, 1922.

3 Ja y ""Illlll 111| l 71kg l 'wazig-9i lfzczmar Grey l lNvENToR W4`/7csses I I l l i BY ATTZ f Patented dan.. i6, i923.

ALEXANDER GREIG, OF NEW YORK, N. Y.

HACK-SAN FRAME.

Application filed January 18, 1922. Serial No. 530,111.

T all w fiom t may concern l Be it known that l., Anciannna Gente, a citizen ot the United tates7 residing at New York city. in the county of New York and State of New York, have invented certain new and useful improvements in Hatie` w Frames7 of which the following is a specification.

This invention has relation to haclazsaw frames, and has for an object to provide a trame which consists of separable parts, adjustably connected together to hold the saw blade, whereby machine parts7 or the like which are inaccessible to an operator by ordinary hacksaw frames may be readily reached by this invention, owing to its construction, enabling the parts to be dissembled, the blade placed in a position for operation upon the part, and the parts of the Jframe reassembled to support the blade.

Another object oit' the invention is to provide a'hacksaw frame in which the blade is adjustabletoward and away from the tra-me,

`thus enabling the trame to be introduced into confined spaces around a machine to operate upona part which could not be reached by means of a rigid trame ot the conventional type.

In addition to the foregoing this invention comprehends improvements in the details of construction and arrangement on parts to be hereinafter described and particularly set forth in the appended claims.

lin the accompanying drawings in which similar and corresponding parts are designated by the same characters of reference throughout the several views in which they appear:

VFigure l is a view in side elevation of a hacksaw frame constructed in accordance with my invention.

Figure 2 is a view ofthe same in top plan. Figure 3 is a view of the yframe in side elevation taken from the reverse side ot figure.

Figure 4 is a detail view enlarged` and in section of the handle of the trame; and

Figure 5 is a detail section taken on the line 5-5 of Figure 4:.

With referenceto the drawings, 10 indicates an angular member or bar forming part of the frame and consisting of a long Side l1 which is the beam member, and a short side l2 formed at right angles to the beam l1 forming the arm oi' the frame. A U-shaped stirrup 13 is secured at its terminals to the end of the beam ll leaving an opening le between the end of the beam ll in the inner side of the stirrup. A straight bar l5 isinscrted in said opening. thus disposing said bar in parallel relation to the side l2 oit the trame. 1"; block i6 is provided having a channel l? to receive the end ot the side and said block is also formed with a circular opening i8 to receive the smooth end oi a threaded rod 19, said smooth end of the rod being formed with a head 20 which is oblong in cross section as shown. The smooth or flattened end portion 19 of the rod 19 bears against the adjacent face of the arm or short side l2 oit the frame when the block 16 is in position so as to permit the rod to slide against this face of the arm and to prevent the rod from turning in the adjustment of the said blade to position, as hereinafter described. The threaded portion et the rod enters a nut 2l embodied in a handle 22, the latter having a deep recess 23 to receive the rod. One side of the head 2O is cut away providing a recess 24 to a depth equal to the thickness of a saw blade. A pin 25 is fixed in the head and exg tends from said recess to enter the opening at one end ot a saw blade 26, the opening at the other end of the blade receiving a pin 2? extending trom the side ot the bar 15. it will be noted from Figure 2 that owing to the provision ot the recess 24 and the tact that the tace of the bar 15 is iiush with the tace of the beam il the blade is located out of the plane of the portion ll oi the trame.

l also provide pins 2S projecting from the sides of the head 20 in opposite directions and at right angles to the `pin 25. fr pin Q9 also projects from each end of the bar l5. A pair of spring fingers are provided, one finger 30 being mounted on the block i6 to engage the arm i2 and the other i'inger 3l being mounted on the stirrup 18 to engage the bar l5. These parts are thus held tric`- tionally against relative movement when the frame is not under strain.

To tension the blade the handle 2Q is rotated relative to the iframe, which action feeds the threaded rod into the handle. The stra-in thus applied to the blade and traine ensures the retention ofthe parts of the latter in any adjusted position. The handle is rotated in a reverse direction to loosen the blade and to permit adjustment of the frame. is shown in the drawing, the frame is arranged :tor ordinary use. When an occasion arises where the blade is too far from the beam l1 to permit the frame to be entered in an opening, for instance of a. machine part, the handle may be loosened slightly and the blade moved toward the beam ll, the block 16 being moved along the side 12 of the frame and the bar l5 inserted further into the stirrup 13. A recess 32 is formed in the side of the beam 11 to receive the pin 25. 1t will be noted that the depth of a cut may be limited by engagement of the inner side of the beam ll with the work. In this manner a number of cuts of uniform depth may be made. 1n the event that the opening of the machine part is too small to receive the trame as inthe example last given, which wouldy be the case where a keyway slot is to be cut in a pulley, the entire frame may be dissembled, the blade introduced into the hub opening of the pulley, and the trame reassembled so that the beam 1l may opcrate between the spokes of the pulley. Owing to the varied number of adjustments possible with this frame many parts of an assembled machine may be reached by the blade which would otherwise be entirely inaccessible by means of the ordinary type of rigid frame. It will also be noted that the blade may be connected at one end to one of the pins 28 at its other end to one of the pins 29, thus disposing the blade at a position at right angles to its usual position. This expedient may be useful occasionally. Other uses and advantages will readily occur to those skilled in the art.

While .1 have illustrated and described my invention with some degree of particularity, I realize that in practice various alterations therein may be made. I therefore reserve the right and privilege oi? changing the form of the details of construction or otherwise altering the arrangement of the correlated parts Without departing from the spirit ont the invention or the scope of the appended claims.

Having thus described my invention, what 1 claim as new and desire to secure by United States Letters Patent is z- 1. A hacksaw frame including a U-shaped frame portion, means mounted on said frame to support a saw blade for adjustment toward and away from the beam ot the frame, said means being adapted to support the blade in a position out of the plane of said beam so that the blade may be adjusted close enough to overlap said beam, whereby the latter may form a means to limit the depth of a cut by engagement with the Work, and means .to tension the blade.

2. In a hacksaw, a tra-ine, devices slidably connected with the frame -for engagement with a saw blade for adjusting the said blade to various positions, in one of which the said blade overlaps the beam member of the 'frame whereby 'this portion 'olf the frame may be used as a gauge `to determine the depth of the cut made by the saw, and means for tensioning the said blade in the said devices.

3. it hacksa-w iframe comprising a beam and an arm at right angles thereto, a bar slidably mounted at vthe end of the beam, with corresponding faces of the beam and bar being substantially' flush with one `another, a head slidably mounted on the said arm ont' the frame, means associated with the said head and bar for engaging a saw blade and supporting the same in a plane parallel to the plane of the Vbeam of the frame but not coincident therewith, whereby the said blade is adjustable to a position in which it overlaps ya part of the beam, and means for tensioning the-said saw blade.

il. Ahack saw frame comprising a beam and an arm at right angles thereto, a bar slidably mounted at the end of the beam, means carried by the bar for engaging one end of a saw blade, a. block slidably mounted on the said arm, a rod adjustable to position in the said block and adapted to engage the opposite end of a saw blade so 4that-the saw blade when in position `lies in a plane parallel with the beam but not coincident therewith, whereby the said blade is adjustable to a position in which it overlaps a part of the beam, and means for adjusting the said rod to position 'longitudinally of the said blade to secure the same -in place.

5. A hack saw `frame comprising a beam and an arm at right angles thereto, 'a bar slidable at right angles to the said vbeam at the end thereof, a pin carried -by the said bar and adapted to engage one end of `a s aw blade, a block slidable to position on the Vsaid arm, a rod passing through the 4said block and `adjust-able to posi-tion therein, a head at the end of the said rod, a pin voarried by the said head and adapted to engage the opposite end of a saw blade so that the saw blade when in position lies in a 'plane parallel to the said beambut not coincident therewith, and means for adjusting the rod to position to apply tension to the said blade.

6. A hack saw frame comprising a beam, an arm at right angles thereto, a bar slidably mounted at right angles 'at the end of the said beam, the faces of the corresponding sides of the beam, its arm and the said `bar lying in the same plane, a pin at theend oli the bar adapted to engage one end ofas'aw, a block slidably mounted on the arm of the iframe, a rod passing through and longitudinally adjustable in the saidblocl, a fhead at the end of the rodhaving a'face lying "in a planeparallel to the pilaneof V.the corresponding faces of the beam, arm and bar, a pin extending from lthe said head adapted to engage the opposite end of a saw blade so that the saw blade may be adjusted to position to overlap the beam, and means for aplying tension to the said blade by adjusting the iod to position.

7. A hack saw frame comprising a beam, an arm at right angles thereto, a bar slidably mounted at right angles at the end of the said beam, the faces of the corresponding sides oiE the beam, its arm and the said bai` lying in the same plane, a pin at the end of the bar adapted to engage one end of a saw, a block slidably mounted on the arm of the frame, a rod passing through and longi tudinally adjustable in the said block, a head at the end of the rod having a face lying in a plane parallel to the plane of the corresponding faces of the beam, arm and bar,

a pin extending from the said head adapted; to engage the opposite end of a saw blade so that the saw blade may be adjusted to position to overlap the beam, the beam of the ALEXANDER GREIG.

lllitnesses:

EGBERT MILLS, CARRIE lL. STRA'USS.

LL. sul 

